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Old 05-30-2011, 05:31 PM   #1
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1970 Mustang - Engine upgrade

So I’m weaving my way through the spec for all of the mods for what some folks think it a toss away car. 1970 was still in the muscle era and the ’70 coupe was the runt of the litter for Mustangs. It had to fight for space with the Bosses and the Mach 1s and really it was lost in the mix. That’s why I love this car.

If you’ve followed my blog you know that it started life as the 250 straight 6 engine and now sports a .030 bored 302, but it needs more. You might be thinking…”Dude…you love the car but you want to make it more like the Boss or a Mach 1.” To that I say, “Well yeah…but no.” I want to make it the car it could have been, it’s not like it’s a station wagon…it’s a sports car, with less sport than its bigger siblings.

For the first set of mods I did what most project manager do, plan it out right down to the documentation for the specs for every mod. For this set of mods I’ll do the same.

I’ll share parts of the documentation here on this page of my blog and find a place for readers to be able to download the template.

However for this entry this entry I wanted to cover some mod options. None of these are firm but all are being looked at.

From my list one of the first things do is to add some heat protection and sound deadening. The amount of heat that comes from the current 302 is pretty intense and as I boost the power with new heads and an intake it’s going to run hotter. I want to keep that heat outside. Of course here in AZ the car is 120 degree before you even start it.

Of course budget is always an issue…yes average guy – average (below average) budget. There are kits out here by Quiet Ride Solutions/AcoustiShield. A complete kit runs about $700. There are various sub kits are available and you can pick the area you want to cover. Now these are all pre-cut for your specific model but there is an alternative. You can by the brand name Dynamate for about 130 bucks for 9 18”x 32” pieces, that is about 35 sq. feet of mate. One other alternative brought to my attention by a fellow Corvette owner was to check at your local big box hardware/lumber/house stuff supplier (Home Depot or Lowes type) stores for the same material, he redid his older Vette for must less than $700. You gonna have to some cutting, but that’s have the fun.

Now the concern I have it how much to do? I’m not sure I need to do the trunk floor, but I probably will, but my real issue is the roof. My headliner is in perfect condition and taking it down risks having to replace it. However, it’s hot here in Southern Arizona and stuffing the top will help keep the car cooler.

What do you think? Let me know.

Thanks for reading.

Tim
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Old 05-31-2011, 06:01 AM   #2
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Hey Tim, nice thread, I have a 70 coupe also and I love her to death. A's for your engine I believe my 302 is plenty of power, sure I would love a 351 cleveland but that isn't practical so I have a suggestion. Fun a beefier four barrel card instead of the two barrel you probably have, this will give you more power at higher speeds that is my cost conscious suggestion.
As for insulation, I wouldn't know I'm from jersey and I feel like its hot when the thermometer hits 90, insulating the roof will be effective for short term sits in the sun but that heat is getting in no matter what you do about it, my suggestion is to work from the bottom up making sure your car is tight a's can be to help it cool down faster with less effort from the a/c or put the 700 dollars into a new cooling system. Goodluck -alex
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Old 05-31-2011, 08:21 AM   #3
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Re: 1970 Mustang - Engine upgrade

Thanks Alex...I already have a 650 holly on the 302. It visits the drag strip down the street from time to time so the power from a set of the 351 CJ heads will be a nice boost.

Use to live in NY, yeah not heat problems there.
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Old 06-01-2011, 10:34 AM   #4
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I think u should add it to the roof and anywhere else u can put it to me It did make a difference but I put it in my truck..., I know what u mean when u open that car door and ur like it feels like an oven.....it's like that here in Florida.... It cut down the heat in my truck so much and also made it quiet in the inside of my truck because with that 350 in the hood it makes alot of noise.... Also like the other guy said when u do have it u dnt really have to run ur a/c on full blast all the time....I dnt know if I help but aleast I tried....
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Old 06-01-2011, 10:50 AM   #5
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Re: 1970 Mustang - Engine upgrade

Thanks. I'll most likely to the top as well.
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